发明授权
US07860255B2 Content distribution server, key assignment method, content output apparatus, and key issuing center
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内容分发服务器,密钥分配方法,内容输出设备和密钥发放中心
- 专利标题: Content distribution server, key assignment method, content output apparatus, and key issuing center
- 专利标题(中): 内容分发服务器,密钥分配方法,内容输出设备和密钥发放中心
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申请号: US10577448申请日: 2004-12-15
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公开(公告)号: US07860255B2公开(公告)日: 2010-12-28
- 发明人: Masao Nonaka , Yuichi Futa , Motoji Ohmori , Shigeru Yamada , Tetsuya Inoue , Yoji Kumazaki
- 申请人: Masao Nonaka , Yuichi Futa , Motoji Ohmori , Shigeru Yamada , Tetsuya Inoue , Yoji Kumazaki
- 申请人地址: JP Osaka
- 专利权人: Panasonic Corporation
- 当前专利权人: Panasonic Corporation
- 当前专利权人地址: JP Osaka
- 代理机构: Wenderoth, Lind & Ponack, L.L.P.
- 优先权: JP2003-419765 20031217
- 国际申请: PCT/JP2004/019124 WO 20041215
- 国际公布: WO2005/059776 WO 20050630
- 主分类号: H04L9/08
- IPC分类号: H04L9/08
摘要:
A content distribution system distributes contents. The content distribution system includes a key issuing center, a server, eight output apparatuses, and a communication path that connects them to each other. The key issuing center and each of the output apparatuses are previously given an individual key shared between them. For example, the key issuing center shares individual key IKa with an output apparatus, individual key IKb with an output apparatus, and individual key IKh with an output apparatus.
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